Naomi Osaka's whereabouts remain unclear just 10 days before the start of the Australian Open.
The two-time champion is on the Melbourne tournament entry list but appears set to miss out, having just arrived back in the United States following a trip around Europe.
Tennis stars have arrived Down Under in the past week as they step up their preparations for the competition by playing in warm-up events. A host of women players are in New Zealand competing in the ASB Classic.
